Mac-Source 1994 July/Mac-Source_July_1994.iso/C and C++/Libraries/TransSkel/Demos/C Demos/MultiSkel/MultiSkel.c

C/C++ Source or Header | 1994-02-21 | 4.3 KB | 212 lines | [TEXT/KAHL]

/*
 * Should add menu hook routine to dim Close item when no windows are active.
 *
 * MultiSkel - TransSkel multiple-window demonstration main module
 *
 * This module performs setup and termination operations, installs
 * the window and menu handlers, and processes menu item selections.
 *
 * There are four window handlers in this demonstration.  The code
 * for each handler is in its own module.
 *
 * Help Window        Scrollable non-editable text window
 * Edit Window        Non-scrollable editable text window
 * Zoom Window        Non-manipulable graphics display window
 * Region Window    Manipulable graphics display window
 *
 * 21 Apr 88 Paul DuBois
 * 29 Jan 89 Version 1.01
 * - Conversion for TransSkel 2.0.
 * 12 Jan 91 Version 1.02
 * - Conversion for TransSkel 3.00.
 * 05 Jun 93 Version 1.03
 * - Conversion for THINK C 6.0.
 * 15 Feb 94
 * - Numerous minor revisions.
 * 21 Feb 94
 * - Updated for TransSkel 3.11.
 */

# include    "TransSkel.h"

# include    "MultiSkel.h"


/* File menu item numbers */

typedef enum {
    open = 1,
    close,
    /* --- */
    quit = 4
} fileItems;


WindowPtr    helpWind;
WindowPtr    editWind;
WindowPtr    zoomWind;
WindowPtr    rgnWind;


/*
 * Menu handles.  There isn't any Apple menu here, since TransSkel will
 * be told to handle it itself.
 */

static MenuHandle    fileMenu;
MenuHandle            editMenu;

static RgnHandle    oldClip;


/*
 * Miscellaneous routines
 * These take care of drawing the grow box and the line along
 * the right edge of the window, and of setting and resetting the clip
 * region to disallow drawing in that right edge by the other drawing
 * routines.
 */


void
DrawGrowBox (WindowPtr wind)
{
Rect        r;
RgnHandle    oldClip;

    r = wind->portRect;
    r.left = r.right - 15;        /* draw only along right edge */
    oldClip = NewRgn ();
    GetClip (oldClip);
    ClipRect (&r);
    DrawGrowIcon (wind);
    SetClip (oldClip);
    DisposeRgn (oldClip);
}


void
SetWindClip (WindowPtr wind)
{
Rect        r;

    r = wind->portRect;
    r.right -= 15;        /* don't draw along right edge */
    oldClip = NewRgn ();
    GetClip (oldClip);
    ClipRect (&r);
}


void
ResetWindClip (void)
{
    SetClip (oldClip);
    DisposeRgn (oldClip);
}


/*
 * Show a window if it's not visible.  Select the window FIRST, then
 * show it, so that it comes up in front.  Otherwise it will be drawn
 * in back then brought to the front, which is ugly.
 *
 * The test for visibility must be done carefully:  the window manager
 * stores 255 and 0 for true and false, not real boolean values.
 */

static void
MyShowWindow (WindowPtr wind)
{

    if (((WindowPeek) wind)->visible == false)
    {
        SelectWindow (wind);
        ShowWindow (wind);
    }
}


/*
 * Handle selection of About MultiSkel... item from Apple menu
 */

static pascal void
DoAppleMenu (short item)
{
    (void) SkelAlert (aboutAlrtRes, SkelDlogFilter (nil, true),
                                        skelPositionOnParentDevice);
    SkelRmveDlogFilter ();
}


/*
 * Process selection from File menu.
 *
 * Open        Make all four windows visible
 * Close    Hide the frontmost window.  If it belongs to a desk accessory,
 *            close the accessory.
 * Quit        Request a halt by calling SkelHalt().  This makes SkelMain
 *            return.
 */

static pascal void
DoFileMenu (short item)
{
    switch (item)
    {
        case open:
            MyShowWindow (rgnWind);
            MyShowWindow (zoomWind);
            MyShowWindow (editWind);
            MyShowWindow (helpWind);
            break;

        case close:
            SkelClose (FrontWindow ());
            break;

        case quit:
            SkelStopEventLoop ();        /* request halt */
            break;
    }
}


/*
 * Initialize menus.  Tell TransSkel to process the Apple menu automatically,
 * and associate the proper procedures with the File and Edit menus.
 * The Edit menu is enabled only when the Edit is frontmost.
 *
 * \311 = ellipsis character
 */

static void
SetUpMenus (void)
{
    SkelApple ((StringPtr) "\pAbout MultiSkel\311", DoAppleMenu);
    fileMenu = GetMenu (fileMenuRes);
    (void) SkelMenu (fileMenu, DoFileMenu, nil, false, false);
    editMenu = GetMenu (editMenuRes);
    (void) SkelMenu (editMenu, EditWindEditMenu, nil, false, true);
}


int
main (void)
{
long    f, b;

    SkelInit ((SkelInitParamsPtr) nil);
    SkelGetWaitTimes (&f, &b);
    b = f;
    SkelSetWaitTimes (f, b);
    SetUpMenus ();            /* install menu handlers */
    RgnWindInit ();            /* install window handlers  */
    ZoomWindInit ();
    EditWindInit ();
    HelpWindInit ();
    SkelEventLoop ();        /* process events */
    SkelCleanup ();            /* throw away windows and menus */
}